| 1. | The guests came in couples .
客人们成双成对地来了。 |
| 2. | After dinner the boys and girls paired off and went to dance .
会餐后，男女青年们成双成对地去跳舞。 |
| 3. | These atoms recombine in pairs during the night to form molecules of oxygen gas .
在夜间，这些氧原子再成对地结合成氧气分子。 |
| 4. | The magnetic fields produced by the orbital motions of the electrons in filled shells also cancel in pairs .
满壳层中电子的轨道运动所产生的磁场也被成对地抵消了。 |
| 5. | After dinner we paired off and went to dance
饭后我们成双成对地跳舞去了。 |
| 6. | We can aggregate subtrees of the " plain " type pairwise
我们可以成对地聚集“ plain “类型的子树。 |
| 7. | Noah built an ark , which the animals came on to in pairs
挪亚建造了方舟，动物们成双成对地来了。 |
| 8. | These rare love birds pair off wing to wing and sing joyously
这些稀有的情鸟往往是并翅成双成对地边飞边引吭歌唱。 |
| 9. | The neck should be raised , the poll high and the head slightly in front of the vertical
体重均匀地分布在四肢上，前、后肢成对地并齐。 |
| 10. | Other rare birds include the silver pheasant and the bayinniao the octave - tone bird which are generally known as the yellow mountains musician
其中有些情鸟被成双成对地运到国外。其他稀有鸟类包括被公认为黄山音乐师的silver pheasant和八音鸟。 |
